Update COMPONENT for jinja2 and mako

Updates COMPONENT for jinja2 and mako since Blink>Internals is getting deprecated.

https: //docs.google.com/document/d/14CcSzzy_Q0_mg-E9WZKESobpoR66JoWlaJhHzQZKSFA/preview
Bug: None
Change-Id: I55ec8972b845181e3eecbb977b27f724308d7c24
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2416214
Commit-Queue: Keishi Hattori <keishi@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Yuki Shiino <yukishiino@chromium.org>
Cr-Commit-Position: refs/heads/master@{#808295}

third_party/jinja2/OWNERS

@@ -3,4 +3,4 @@ haraken@chromium.org
 nbarth@chromium.org
 
 # TEAM: platform-architecture-dev@chromium.org
-# COMPONENT: Blink>Internals
+# COMPONENT: Blink>Bindings

third_party/mako/OWNERS

@@ -3,4 +3,4 @@ peria@chromium.org
 haraken@chromium.org
 
 # TEAM: platform-architecture-dev@chromium.org
-# COMPONENT: Blink>Internals
+# COMPONENT: Blink>Bindings